Window-cleaning platform.



No; 818,484. PATENTED APR. 24, 1906.

H. P. TERRY. WINDOW CLEANING PLATFORM.

APPLICATION FILED SEPT. 18. 1905.

i h/themes J! v UNITED s'rnrns PATENT onrron.

HOWELL P. TERRY, OF ELIZABETH, NEW JERSEY.

wlNDOw -fiLEANlNG PLATFORM.

No. else-e4.

Specification-of Letters Patent.

Patented a n 24, race.

Application filed September 18,1905. ,Serial No. 278,884.

useful Improvement in Window Cleaning Platforms, of which the following is a specification.

I The device may be used for many other purposes, but isintended mainly to serve by beingtemporarily set to project at the base of a Window and allow a man or woman to either sit'or stand thereon in eflecting all the movements required to wash and rub or'wipe the outer surfaces of the window. It belongs to t'he-class'which allows it to be easil thrust out from within the building on simply opening the window. It requires no special construction or preparation ofany portion of the window or any adjacent part. It folds easily into a small flat parcel.

The peculiarities lie in details .of its construction which-makeit specially safe, easy to adjust for use, and to again restore to the compact condition for storage, and allow it to be made and sold at a moderate cost. The following is a description of what I consider the best means of carrying out the invention.

The accompanying drawings form a part of 7 this specification.

Figure 1 is an elevation showing myapparatus adjusted for use with a section of a pordownward a-tjpoints. which should vary with tion of the wall of a building. Fig.2 is a la'n view seen frombelow and the legs folded. ig.-3 is on a smaller scale.

corresponding to Fig. 2 seen from above.

' Similar letters and marks of-referenceindi catelike parts on all the figures where they appear. g

A is a base, cf wood; A A, parallel bars of .low steel'extending beyond what is in use the screw C ready to be easily and strongly aplied on the projecting ends ofsuch base. hey can be adjusted with any degree of ninety In use these bars extend from the base outside inward through the bottom of the open Window, and the clamps extend the thickness of the Wall of the buildings. The extreme inner end of each bar A- is, formed with aslightenlargement A", which serves as asafety stop in the possible casethat the use It is a plan view building. D and E are folding legs adapted to turn in these eyes and when extended to strongly and stiflly sup ort the base. leg is formed with an 6 set (1 and e, respectively, which allows it to bear fairly against the outer face of the building without necessarily touching the window-base. The legs are a little bent laterally, as indicated by the shading in Fig. 2. In folding, the leg E is first folded and then'the other leg D is folded and by reason ofits bent condition matches to the leg E, so as to be parallel to base.

A A are stops on the under face of the base arranged to prevent the legs from beir" opened too far. i

J is a light movable tie-rod having an eye at each end engaging each with a leg. When the device is to be packed for storage or transportation, this tie is slipped along on the respective legs to a position adjacent to the out ermost eyes. This allows the legs to be folded and unfolded freely. 1

When the device is to be used, it may be brought in "the folded condition, the legs unand lowered till the bars bear on the Windowsill. The clamps, if not .alreadypositioned, are slacked and adjusted outwar or inward on the bars B and the screws G tightened.

The construction allows thel s to find a long bearing fairly against the .bui ding from the lowest point (i up to the offset cl and from c to the offset e, respectively.

I provide a very simple folding frame on the upper face of the base to insure the safety Each of the operator who s; s or stands there in Working. v j I I 'K and L are eyes set in the base, and M is'a yoke having its ends engag d in these eyes and free to turn a quarter-re it meets stout stops A, which arrest it inthe upright osition.

P are taking holdjof the yoke M at the olution or until points shown, with libert to turn, and connected by knuckles P with the up er ends of light levers Q, the lower ends of w 1ich latter engage in the eyes R. The inner ends of the links P are bent down near the knuckles, making a smoothly-rounded corner when in use and allowing the parts to fold compactly when desired. I

The same setting of the clam s B will usually serve for all the windows 0 a fiat or of an entire building. The same construction with adjustments will serve for all ordinary window's.

' Modifications may be made without departing from the principle or sacrificing the advantages of the invention. Parts can be used withoutthe whole. The construction will be very useful without the parts K, L, M, and P. Collars (not shown) may be rovided on the yoke Q to keep the links in place.

"I claim as my invention- 17 In a device of thecharacter described, a ortable window-cleaning platform A, means for holding it strongly to a window-base, and folding legs D E and a sliding tie J combined and adapted to serve substantially as herein specified.

2. In a device of the character described, a

portable window-cleaning platform, means- .for holding it strongly and adjustably to a window-base, comprising bars and adjustable clamps, folding legs and a sliding tie carried on such legs, all combined and adapted to serve substantially as herein specified.

3. In a device of the character described, a

portable window -cloaning platform and means for holding it to a windou lmso, i'u|l1 prising bars adapted to extend inward through a window-oponing, adjustal'ilo chimps on such bars adapted to engage the interior of the building, a safety-stop A" on such lmrs, legs carried on the under face of llll platform adapted to be extended and hour fairly against the building or be folded (lUHU to the base and a sliding tie on such logs in ('()ll1l)l1lil-- tion with each other and with stops, all urranged toserve substantially herein specified.

4. In a device of the character described, :1 portable window-cleaning platform, means for holding it to a window-base, comprising bars adapted to extend inward through a window-opening, adjustable clamps on such bars adapted to engage the interior of the building, a safety-stop A on such bars, legs carried on the under face of the platform ada ted to be extended so as to bear fairly agalnst the building and to be folded and lie close to the base and a sliding tie on such legs, in combination with each other and with the stops, the collapsible yoke, links and levers, all adapted to serve substantially as herein specified.

Signed at the city of New York, in the county of New York and State of NewYork, this 14th day of September, A. D. 1905.

HOWVELL P. TERRY. 

